(19)

(11)

EP 0 515 604 A1

(12)

(43) Date of publication: 02.12.1992 Bulletin 1992/49 (21) Application number: 91920918.0 (22) Date of filing: 05.12.1991

(51) International Patent Classification (IPC):  A01J 5/ 08( . ) (86) International application number: PCT/SE1991/000834 (87) International publication number: WO 1992/010928 (09.07.1992 Gazette 1992/17)

(84) Designated Contracting States: DE DK FR GB IT NL SE (30) Priority: 17.12.1990 SE 19900004024 (71) Applicant: ALFA-LAVAL AGRICULTURE INTERNATIONAL AB S-147 21 Tumba (SE)	(72) Inventors: PETTERSON, Torbjörn S-646 00 Gnesta (SE) FLODIN, Hans S-146 00 Tullinge (SE) (74) Representative: Lerwill, John, et al  A.A. Thornton & Co. Northumberland House 303-306 High Holborn London, WC1V 7LE London, WC1V 7LE (GB)